<template>
  <div class="login-container">
    <div class="login-box">
      <!-- 头像区域 -->
      <div class="avatar-box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        :model="loginInfo"
        :rules="loginFormRules"
        label-width="0px"
        class="login-form"
        ref="loginFormRef"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginInfo.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginInfo.password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域  -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetFields">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 登录表单数据对象
      loginInfo: {
        username: "admin",
        password: "123456",
      },
      // 表单的验证规则对象
      loginFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 12, message: "长度在3到12个字符", trigger: "blur" },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在6到15个字符", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    resetFields() {
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      this.$refs.loginFormRef.validate(async (value) => {
        if (!value) return;
        const { data: res } = await this.$http.post("login", this.loginInfo);
        if (res.meta.status !== 200) return this.$message.error("登录失败！");
        this.$message.success("登陆成功！");
        // 将登入成功的token保存到客户端sessionStorage中
        window.sessionStorage.setItem("token", res.data.token);
        // 登入成功跳转后台页面
        this.$router.push("/home");
      });
    },
  },
};
</script>

<style lang = "less" scoped>
.login-container {
  background-color: #2b4b6b;
  height: 100%;
  position: relative;
}
.login-box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar-box {
  width: 130px;
  height: 130px;
  background-color: #fff;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login-form {
  box-sizing: border-box;
  width: 100%;
  padding: 20px;
  position: absolute;
  bottom: 0;
}
</style>
